What are Real Time Clocks ?
Real Time Clocks (RTCs) are integrated circuits designed to keep track of the current time and date, even when the main power is off. They are widely used in applications such as timers, clocks, and scheduling devices in consumer electronics and industrial systems. Important specifications for selecting RTCs include Current, which affects power consumption; Date Format, which determines how the time is displayed; and Operating Temperature, which ensures reliable performance in different environments. Procurement teams should validate lifecycle status and consider alternate-source options to mitigate sourcing risks.
Parts in this category
Tap rows to select parts
Compare stocked parts across manufacturers and distributors, then add lines to your RFQ.
| Part & Mfr | Current | Date Format | Features | Interface | Memory Size | Mounting Type | Operating Temperature | Supplier Device Package | Time Format | Type | Voltage | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Microchip Technology
|
Send RFQ |
Price on request
Price and Stock
on Request |
1µA @ 1.8V ~ 5.5V | YY-MM-DD-dd | Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID, Watchdog Timer | SPI | 64B | Surface Mount | -40°C ~ 85°C | 14-SOIC | HH:MM:SS:hh (12/24 hr) | Clock/Calendar | 1.3V ~ 5.5V | |
Microchip Technology
|
Send RFQ |
Price on request
Price and Stock
on Request |
1µA @ 1.8V ~ 5.5V | YY-MM-DD-dd | Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID, Watchdog Timer | SPI | 64B | Surface Mount | -40°C ~ 85°C | 14-TSSOP | HH:MM:SS:hh (12/24 hr) | Clock/Calendar | 1.3V ~ 5.5V | |
Microchip Technology
|
Send RFQ |
Price on request
Price and Stock
on Request |
1µA @ 1.8V ~ 5.5V | YY-MM-DD-dd | Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID, Watchdog Timer | SPI | 64B | Surface Mount | -40°C ~ 85°C | 14-SOIC | HH:MM:SS:hh (12/24 hr) | Clock/Calendar | 1.3V ~ 5.5V | |
Microchip Technology
|
Send RFQ |
Price on request
Price and Stock
on Request |
1µA @ 1.8V ~ 5.5V | YY-MM-DD-dd | Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID, Watchdog Timer | SPI | 64B | Surface Mount | -40°C ~ 85°C | 14-TSSOP | HH:MM:SS:hh (12/24 hr) | Clock/Calendar | 1.3V ~ 5.5V | |
Microchip Technology
|
Send RFQ |
Price on request
Price and Stock
on Request |
1µA @ 1.8V ~ 5.5V | YY-MM-DD-dd | Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID, Watchdog Timer | SPI | 64B | Surface Mount | -40°C ~ 85°C | 14-SOIC | HH:MM:SS:hh (12/24 hr) | Clock/Calendar | 1.3V ~ 5.5V | |
Microchip Technology
|
Send RFQ |
Price on request
Price and Stock
on Request |
1µA @ 1.8V ~ 5.5V | YY-MM-DD-dd | Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID, Watchdog Timer | SPI | 64B | Surface Mount | -40°C ~ 85°C | 14-TSSOP | HH:MM:SS:hh (12/24 hr) | Clock/Calendar | 1.3V ~ 5.5V | |
|
Analog Devices / Maxim Integrated
|
Send RFQ |
Price on request
Price and Stock
on Request |
2mA @ 4.5V ~ 5.5V | YY-MM-DD-dd | Alarm, Leap Year, NVSRAM, Square Wave Output, Trickle-Charger | Parallel | 114B | Surface Mount | -40°C ~ 85°C | 48-PBGA (11.8x15.3) | HH:MM:SS (12/24 hr) | Clock/Calendar | 2V ~ 3.05V | |
Analog Devices / Maxim Integrated
|
Send RFQ |
Price on request
Price and Stock
on Request |
150µA @ 3V ~ 3.6V | Binary | Alarm, Square Wave Output | Parallel | - | Surface Mount | -40°C ~ 85°C | 24-TSSOP | Binary | Elapsed Time Counter | 1.6V ~ 3.7V | |
Analog Devices / Maxim Integrated
|
Send RFQ |
Price on request
Price and Stock
on Request |
0.6µA @ 1.3V ~ 1.8V | YY-MM-DD-dd | Alarm, Leap Year, Square Wave Output | I²C, 2-Wire Serial | - | Surface Mount | -40°C ~ 85°C | 16-SOIC | HH:MM:SS (12/24 hr) | Clock/Calendar | 1.8V ~ 5.5V | |
Analog Devices / Maxim Integrated
|
Send RFQ |
Price on request
Price and Stock
on Request |
175µA @ 2.97V ~ 5.5V | Binary | Alarm, Square Wave Output, Trickle-Charger, Watchdog Timer | I²C, 2-Wire Serial | - | Surface Mount | -40°C ~ 85°C | 10-uMAX/uSOP | Binary | Binary Counter | 1.3V ~ 5.5V | |
Analog Devices / Maxim Integrated
|
Send RFQ |
Price on request
Price and Stock
on Request |
4µA ~ 15µA @ 3V ~ 5.5V | Binary | Alarm, EEPROM | I²C, 2-Wire Serial | 10B | Surface Mount | -40°C ~ 85°C | 8-SOIC | Binary | Elapsed Time Counter | 2.5V ~ 5.5V | |
Analog Devices / Maxim Integrated
|
Send RFQ |
Price on request
Price and Stock
on Request |
110µA ~ 170µA @ 3.63V ~ 5.5V | YY-MM-DD-dd | Alarm, Leap Year, Square Wave Output, TCXO/Crystal | I²C, 2-Wire Serial | - | Surface Mount | 0°C ~ 70°C | 16-SOIC | HH:MM:SS (12/24 hr) | Clock/Calendar | 2.3V ~ 5.5V | |
Renesas
|
Send RFQ |
Price on request
Price and Stock
on Request |
0.6µA @ 1.3V ~ 1.8V | YY-MM-DD-dd | Alarm, Leap Year, Square Wave Output | I²C, 2-Wire Serial | - | Surface Mount | -40°C ~ 85°C | 8-SOIC | HH:MM:SS (12/24 hr) | Clock/Calendar | 1.8V ~ 5.5V | |
Renesas
|
Send RFQ |
Price on request
Price and Stock
on Request |
0.6µA @ 1.3V ~ 1.8V | YY-MM-DD-dd | Alarm, Leap Year, Square Wave Output | I²C, 2-Wire Serial | - | Surface Mount | -40°C ~ 85°C | 8-SOIC | HH:MM:SS (12/24 hr) | Clock/Calendar | 1.8V ~ 5.5V | |
Renesas
|
Send RFQ |
Price on request
Price and Stock
on Request |
0.6µA @ 1.3V ~ 1.8V | YY-MM-DD-dd | Alarm, Leap Year, Square Wave Output | I²C, 2-Wire Serial | - | Surface Mount | -40°C ~ 85°C | 8-MSOP | HH:MM:SS (12/24 hr) | Clock/Calendar | 1.8V ~ 5.5V | |
Renesas
|
Send RFQ |
Price on request
Price and Stock
on Request |
0.6µA @ 1.3V ~ 1.8V | YY-MM-DD-dd | Alarm, Leap Year, Square Wave Output | I²C, 2-Wire Serial | - | Surface Mount | -40°C ~ 85°C | 8-MSOP | HH:MM:SS (12/24 hr) | Clock/Calendar | 1.8V ~ 5.5V | |
Renesas
|
Send RFQ |
Price on request
Price and Stock
on Request |
0.6µA @ 1.3V ~ 1.8V | YY-MM-DD-dd | Alarm, Leap Year, Square Wave Output | I²C, 2-Wire Serial | - | Surface Mount | -40°C ~ 85°C | 16-QFN (3x3) | HH:MM:SS (12/24 hr) | Clock/Calendar | 1.8V ~ 5.5V | |
Renesas
|
Send RFQ |
Price on request
Price and Stock
on Request |
0.6µA @ 1.3V ~ 1.8V | YY-MM-DD-dd | Alarm, Leap Year, Square Wave Output | I²C, 2-Wire Serial | - | Surface Mount | -40°C ~ 85°C | 16-QFN (3x3) | HH:MM:SS (12/24 hr) | Clock/Calendar | 1.8V ~ 5.5V | |
Renesas
|
Send RFQ |
Price on request
Price and Stock
on Request |
0.6µA @ 1.3V ~ 1.8V | YY-MM-DD-dd | Alarm, Leap Year, Square Wave Output | I²C, 2-Wire Serial | - | Surface Mount | -40°C ~ 85°C | 16-SOIC | HH:MM:SS (12/24 hr) | Clock/Calendar | 1.8V ~ 5.5V | |
Renesas
|
Send RFQ |
Price on request
Price and Stock
on Request |
0.6µA @ 1.3V ~ 1.8V | YY-MM-DD-dd | Alarm, Leap Year, Square Wave Output | I²C, 2-Wire Serial | - | Surface Mount | -40°C ~ 85°C | 16-SOIC | HH:MM:SS (12/24 hr) | Clock/Calendar | 1.8V ~ 5.5V | |
Renesas
|
Send RFQ |
Price on request
Price and Stock
on Request |
2µA @ 3.3V | YY-MM-DD-dd | Leap Year, NVSRAM, Square Wave Output | I²C, 2-Wire Serial | 56B | Surface Mount | -40°C ~ 85°C | 8-MSOP | HH:MM:SS (12/24 hr) | Clock/Calendar | 1.3V ~ 3.7V | |
Renesas
|
Send RFQ |
Price on request
Price and Stock
on Request |
2µA @ 3.3V | YY-MM-DD-dd | Leap Year, NVSRAM, Square Wave Output | I²C, 2-Wire Serial | 56B | Surface Mount | -40°C ~ 85°C | - | HH:MM:SS (12/24 hr) | Clock/Calendar | 1.3V ~ 3.7V | |
Renesas
|
Send RFQ |
Price on request
Price and Stock
on Request |
2µA @ 3.3V | YY-MM-DD-dd | Leap Year, NVSRAM, Square Wave Output | I²C, 2-Wire Serial | 56B | Surface Mount | -40°C ~ 85°C | 16-SOIC | HH:MM:SS (12/24 hr) | Clock/Calendar | 1.3V ~ 3.7V | |
Renesas
|
Send RFQ |
Price on request
Price and Stock
on Request |
5µA @ 3.63V ~ 5.5V | YY-MM-DD-dd | Leap Year, NVSRAM, Square Wave Output | I²C, 2-Wire Serial | 56B | Surface Mount | -40°C ~ 85°C | 16-SOIC | HH:MM:SS (12/24 hr) | Clock/Calendar | 1.3V ~ 3.7V | |
Renesas
|
Send RFQ |
Price on request
Price and Stock
on Request |
5µA @ 3.63V ~ 5.5V | YY-MM-DD-dd | Leap Year, NVSRAM, Square Wave Output | I²C, 2-Wire Serial | 56B | Surface Mount | -40°C ~ 85°C | 16-SOIC | HH:MM:SS (12/24 hr) | Clock/Calendar | 1.3V ~ 3.7V | |
Renesas
|
Send RFQ |
Price on request
Price and Stock
on Request |
200µA @ 3.63V ~ 5.5V | YY-MM-DD-dd | Alarm, Leap Year, Square Wave Output, Trickle-Charger | I²C, 2-Wire Serial | - | Surface Mount | -40°C ~ 85°C | 16-SOIC | HH:MM:SS (12/24 hr) | Clock/Calendar | 1.3V ~ 3.7V | |
Renesas
|
Send RFQ
|
Price on request
Price and Stock
on Request |
200µA @ 3.63V ~ 5.5V | YY-MM-DD-dd | Alarm, Leap Year, Square Wave Output, Trickle-Charger | I²C, 2-Wire Serial | - | Surface Mount | -40°C ~ 85°C | 16-SOIC | HH:MM:SS (12/24 hr) | Clock/Calendar | 1.3V ~ 3.7V | |
Renesas
|
Send RFQ |
Price on request
Price and Stock
on Request |
0.65µA @ 1.8V | YY-MM-DD-dd | Alarm, Leap Year | I²C, 2-Wire Serial | - | Surface Mount | -40°C ~ 85°C | 8-UTDFN (2x2) | HH:MM:SS (12/24 hr) | Clock/Calendar | 1.8V ~ 3.6V | |
Diodes Incorporated
|
Send RFQ |
Price on request
Price and Stock
on Request |
25.3µA ~ 81µA @ 2V ~ 5V | YY-MM-DD-dd | Leap Year, NVSRAM, Square Wave Output, Trickle-Charger | 3-Wire Serial | 31B | Surface Mount | -40°C ~ 85°C | 8-SOIC | HH:MM:SS (12/24 hr) | Clock/Calendar | 1.5V ~ 5.5V | |
Diodes Incorporated
|
Send RFQ |
Price on request
Price and Stock
on Request |
1.5mA @ 4.5V ~ 5.5V | YY-MM-DD-dd | Alarm, Leap Year, NVSRAM, Square Wave Output | I²C, 2-Wire Serial | 56B | Surface Mount | -40°C ~ 85°C | 8-SOIC | HH:MM:SS (12/24 hr) | Clock/Calendar | 2V ~ 3.5V | |
Diodes Incorporated
|
Send RFQ |
Price on request
Price and Stock
on Request |
70µA @ 1.5V ~ 5.5V | YY-MM-DD-dd | Leap Year, Square Wave Output, Y2K | I²C, 2-Wire Serial | 56B | Surface Mount | -40°C ~ 85°C | 8-SOIC | HH:MM:SS (24 hr) | Clock/Calendar | 2V ~ 5.5V | |
Diodes Incorporated
|
Send RFQ |
Price on request
Price and Stock
on Request |
0.8µA @ 1.3V ~ 1.8V | YY-MM-DD-dd | Alarm, Leap Year, Square Wave Output | I²C, 2-Wire Serial | - | Surface Mount | -40°C ~ 85°C | 8-MSOP | HH:MM:SS (12/24 hr) | Clock/Calendar | 1.8V ~ 5.5V | |
Diodes Incorporated
|
Send RFQ |
Price on request
Price and Stock
on Request |
0.8µA @ 1.3V ~ 1.8V | YY-MM-DD-dd | Alarm, Leap Year, Square Wave Output | I²C, 2-Wire Serial | - | Surface Mount | -40°C ~ 85°C | 8-SOIC | HH:MM:SS (12/24 hr) | Clock/Calendar | 1.8V ~ 5.5V | |
Diodes Incorporated
|
Send RFQ |
Price on request
Price and Stock
on Request |
125µA @ 2.7V ~ 5.5V | YY-MM-DD-dd | Leap Year, NVSRAM, Square Wave Output | I²C, 2-Wire Serial | 56B | Surface Mount | -40°C ~ 85°C | 8-MSOP | HH:MM:SS (12/24 hr) | Clock/Calendar | 1.5V ~ 3.7V | |
Diodes Incorporated
|
Send RFQ |
Price on request
Price and Stock
on Request |
0.65µA ~ 0.7µA @ 3V ~ 5V | YY-MM-DD-dd | Alarm, Leap Year, Square Wave Output | I²C, 2-Wire Serial | - | Surface Mount | -40°C ~ 85°C | 8-MSOP | HH:MM:SS (12/24 hr) | Clock/Calendar | 1.3V ~ 5.5V | |
Diodes Incorporated
|
Send RFQ |
Price on request
Price and Stock
on Request |
0.8µA @ 3V | YY-MM-DD-dd | Alarm, Leap Year | I²C, 2-Wire Serial | - | Surface Mount | -40°C ~ 85°C | 8-TSSOP | HH:MM:SS (12/24 hr) | Clock/Calendar | 1.8V ~ 6V | |
Epson
|
Send RFQ |
Price on request
Price and Stock
on Request |
0.5µA ~ 1µA @ 3V ~ 5V | YY-MM-DD-dd | Alarm, Leap Year | SPI | - | Surface Mount | -40°C ~ 85°C | 14-SOP | HH:MM:SS | Clock/Calendar | 1.6V ~ 5.5V | |
Epson
|
Send RFQ |
Price on request
Price and Stock
on Request |
0.8µA ~ 1.2µA @ 3V ~ 5V | YY-MM-DD-dd | Alarm, Leap Year | I²C, 2-Wire Serial | - | Surface Mount | -40°C ~ 85°C | 22-SON | HH:MM:SS (24 hr) | Clock/Calendar | 1.8V ~ 5.5V | |
Epson
|
Send RFQ |
Price on request
Price and Stock
on Request |
1.2µA ~ 1.8µA @ 3V ~ 5V | YY-MM-DD-dd | Alarm, Leap Year | SPI | - | Surface Mount | -40°C ~ 85°C | 14-SOP | HH:MM:SS (12/24 hr) | Clock/Calendar | 1.7V ~ 5.5V | |
Epson
|
Send RFQ |
Price on request
Price and Stock
on Request |
0.95µA ~ 1µA @ 3V ~ 5V | YY-MM-DD-dd | Alarm, Leap Year | 3-Wire Serial | - | Surface Mount | -40°C ~ 85°C | 12-VSOJ | HH:MM:SS (24 hr) | Clock/Calendar | 1.6V ~ 5.5V | |
Epson
|
Send RFQ |
Price on request
Price and Stock
on Request |
0.8µA ~ 1.2µA @ 3V ~ 5V | YY-MM-DD-dd | Alarm, Leap Year | I²C, 2-Wire Serial | - | Surface Mount | -40°C ~ 85°C | 20-VSOJ | HH:MM:SS (24 hr) | Clock/Calendar | 1.8V ~ 5.5V | |
Epson
|
Send RFQ |
Price on request
Price and Stock
on Request |
0.8µA ~ 1.2µA @ 3V ~ 5V | YY-MM-DD-dd | Alarm, Leap Year | I²C, 2-Wire Serial | - | Surface Mount | -40°C ~ 85°C | 22-SON | HH:MM:SS (24 hr) | Clock/Calendar | 1.8V ~ 5.5V | |
Epson
|
Send RFQ |
Price on request
Price and Stock
on Request |
0.8µA ~ 1.2µA @ 3V ~ 5V | YY-MM-DD-dd | Alarm, Leap Year | I²C, 2-Wire Serial | - | Surface Mount | -40°C ~ 85°C | 14-SOP | HH:MM:SS (24 hr) | Clock/Calendar | 1.8V ~ 5.5V | |
NXP Semiconductors
|
Send RFQ |
Price on request
Price and Stock
on Request |
0.885µA @ 3.3V | YY-MM-DD-dd | Alarm, Leap Year, Watchdog Timer | I²C, 2-Wire Serial | 64B | Surface Mount | -40°C ~ 85°C | 10-TSSOP | HH:MM:SS:hh (12/24 hr) | Clock/Calendar | 0.9V ~ 5.5V | |
Epson
|
Send RFQ |
Price on request
Price and Stock
on Request |
5µA ~ 10µA @ 2V ~ 5V | YY-MM-DD-dd | Leap Year | Parallel | - | Surface Mount | -40°C ~ 85°C | 24-SOP | HH:MM:SS (12/24 hr) | Clock/Calendar | 4.5V ~ 5.5V | |
Epson
|
Send RFQ |
Price on request
Price and Stock
on Request |
5µA ~ 10µA @ 2V ~ 5V | YY-MM-DD-dd | Leap Year | Parallel | - | Surface Mount | -40°C ~ 85°C | 24-SOP | HH:MM:SS (12/24 hr) | Clock/Calendar | 4.5V ~ 5.5V | |
Epson
|
Send RFQ |
Price on request
Price and Stock
on Request |
1.2µA ~ 1.8µA @ 3V ~ 5V | YY-MM-DD-dd | Alarm, Leap Year | I²C, 2-Wire Serial | - | Surface Mount | -40°C ~ 85°C | 14-SOP | HH:MM:SS (12/24 hr) | Clock/Calendar | 1.7V ~ 5.5V | |
Epson
|
Send RFQ |
Price on request
Price and Stock
on Request |
1.2µA ~ 1.8µA @ 3V ~ 5V | YY-MM-DD-dd | Alarm, Leap Year | I²C, 2-Wire Serial | - | Surface Mount | -40°C ~ 85°C | 14-SOP | HH:MM:SS (12/24 hr) | Clock/Calendar | 1.7V ~ 5.5V | |
Epson
|
Send RFQ |
Price on request
Price and Stock
on Request |
2.5µA @ 3V | YY-MM-DD-dd | Alarm | I²C, 2-Wire Serial | - | Surface Mount | -40°C ~ 85°C | 12-VSOJ | HH:MM:SS (12/24 hr) | Time Event Recorder | 1V ~ 5.5V | |
|
Epson
|
Send RFQ |
Price on request
Price and Stock
on Request |
2.5µA @ 3V | YY-MM-DD-dd | Alarm | I²C, 2-Wire Serial | - | Surface Mount | -40°C ~ 85°C | 14-SOP | HH:MM:SS (12/24 hr) | Time Event Recorder | 1V ~ 5.5V |
Showing 751-800 of 2,387 products